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2005
Equilibria
E 4000
02- 015
Re-Entrant Phase Transition of the Crystalline Ion Conductor Ag7P3S11. — As
revealed by XRD, Raman scattering, 31P and 109Ag NMR spectroscopy, and electrical
conductivity measurements, the high-temperature γ-phase of the title compound undergoes a phase transition to an intermediate β-phase of different symmetry at 205 K. Near
130 K another phase transition occurs resulting in the formation of an ordered low-temperature α-modification. Both the α- and the γ-phase crystallize in the monoclinic space
group C2/c with Z = 8. — (BRINKMANN, C.; ECKERT*, H.; WILMER, D.;
VOGEL, M.; SCHMEDT AUF DER GUENNE, J.; HOFFBAUER, W.; RAU, F.;
PFITZNER, A.; Solid State Sci. 6 (2004) 10, 1077-1088; Inst. Phys. Chem., Westfael.
Wilhelms-Univ., D-48149 Muenster, Germany; Eng.) — W. Pewestorf
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